* USB 4 Port Hub: 4 USB ports Standard A type up to 100mA current per port and 1 USB Mini B type Female input connector * The QHMPL hub provides full over current protection * QHMPL USB Hub supports the following signaling rates: A low-speed rate of 1.5 Mbit/s (~183 kB/s) as is defined by USB 1.0; The full-speed rate of 12 Mbit/s (~1.43 MB/s) the basic USB data rate defined by USB 1.1 and a high-speed (USB 2.0) rate of 480 Mbit/s (~57 MB/s) * QHMPL Hub is capable of chaining up to 127 USB devices * Truly Plug and play automatic with all OS including windows 98, 2000, ME, XP, 7, Mac Linux virtually all OS * USB 2.0 and ACPI compliant * On and Off switch